Medicines and drugs Stimulants. stimulants nicotine, caffeine, amphetamines the intention of these drugs is to have similar effects to adrenaline which.

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Presentation on theme: "Medicines and drugs Stimulants. stimulants nicotine, caffeine, amphetamines the intention of these drugs is to have similar effects to adrenaline which."— Presentation transcript:

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stimulants nicotine, caffeine, amphetamines the intention of these drugs is to have similar effects to adrenaline which is a natural stimulant. amphetamines can do this because they have similar structures to adrenaline.

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stimulants affect central nervous system; act on the level of neurotransmitters which are chemicals that acts as messengers and stimulate pathways which … …increases activity of the brain largely opposite to depressants which decrease activity in the nervous system

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amphetamines group of drugs which mimic the effect of adrenaline classified as symphatomimetic drug as it stimulates the symphatetic nervous system adrenaline or epinephrine = hormone released in times of stress e.g. pain, cold, fear, … response to increased adrenaline in the body: increased heart beat/blood pressure Increased blood flow to brain and muscles Increased air flow to lungs Increased mental alertness

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compare Common: both amphetamines and epinephrine have a phenyl-ethyl-amine chain which consists of a benzene ring linked to an amine group by a carbon chain Different: functional groups amphetamines: primary amine epinephrine: 3 hydroxyl groups secondary amine

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caffeine Caffeine is a psychoactive stimulant. When consumed in large amounts it can cause anxiety, irritability and sleeplessness. It is a weak diuretic i.e. causes the body to lose more water than it takes in Its structure is similar to nicotine.